Apparatus for power distribution.



R. F. SGHUCHARDT.

APPARATUS FOR POWER DISTRIBUTION.

I I D IAN. I2. IQIZ.

1,210,705. Patented Jan. 2, 1917.

WITNESSES: INVENTOR tails of certain embodiments of my invention as shown in the accompanying drawings,

Figure 1 diagrammatically illustrates one form of the didereutial inductive relay; 2 illustrates a modified form of this relay.

Referring first to Fig. 1, there is shown an iron 10 upon which the transformer coils D121 De and Dg are wound. An iron kce ier shown at Die. The adjusting screws Dr provide a means for regulating air gap between the two ends of the lo. per and the core upon which the coils of the dlifercntial inductive relay are Wound. 'l aps brought out from the'coils D02 and enable the switches Di to cooperate in the number of efiective turns of the (Ki n; which they are-associated. The

' are designed for use in balance of the coils D22 and Dy with e secondary coil Dc when the are upon the transmission line or tie normal and also to permit a moxie .stion it]. which the coils and Dy will be in opposition. The magnetic v each of the primary coils is regu- ,d icy the switches Bi and the leaking 1 by means of the adjustable keeper, so t no current will be induced under norl. conditions in the Winding D2 A. modified form of differential. induct-iv rclav shown in Fig. 2. In this form the rmcr coils are Wound upon a U- tra. shaped .'core, the keeper being substantially straight. This modified form shows also a different mechanism for adjusting the air gaps in the magnetic circuit. The drawing is in diagrammatic cape and will need no explanation in addition to that already given. in connection with 1.

By means of the double adjustment of the magnetic return path it is possible to adj ust the same with a greater degree of accuracy than would be the case if the keeper, or path were constructed to move toward or from the core only as a Whole. For exampie, if the entire return path were moved :llOI'tQll the air gap, say,

th core to cit incl; the keeper would have to be moved l an. inch, which would hardly be possible 7 unless the adjusting were made very delicate.

vice illustrated in Fig. 1 it would be neces sary only to move one end of the path an inch toward the core, tlzercby decreasing the air gap of an inchf l'n other Words, the independent adjustment permits a of eeusitiveuess to ice attained.

Wound and connected is such that their in the dc a larger amount of movement of the ad justing means than the simultaneous adjustment.

In Fig. 2 one end of the keeper may also be moved toward or away from the core substantially independent of the other end.

Each one of the coils D2 is electrically connected to a relay R which controls a sec ond electric circuit as shown.

The operation of the device is as follows: A suitable source of current is provided for each of the primary windings Dr and Dy same direction around the core of the differential inductive relay. in either case'a current will be induced in the Winding D2 to actuate the relay it which i'uay be arranged by means of a second electric circuit to effectively disconnect the faulty line from the system or" which it forms a part.

I claim:

1. In an inductive differential relay. the combination of a core, differential Windiugs mounted-thereon, a secondary winding mounted thereon, a magnetic return path for said core, adjusting mechanism for moving one end of the return path farther from the core than the other end if desired and for moving the return path toward or away from both eu ds of the core as desired and translating devices connected with said secondary Winding.

2. In an inductive diflcrential relay the combination of a core, (liifercntial windings mounted thereon. a secondary winding mounted thereon, a magnetic return path -for said core, an adjusting device secured to each end of the return path for moving it toward or away from said core indepen ently of the other end of said return path and translating devices connected with said secondary Winding.

- In Witness whereof, I hereunto subscribe my name this ninth day of January. A. D. 1912.

RUDOLPH F. SCHUCHARB". l/Vitnesses: C. A. lKELLER, J. C. Foss. 

